Fixing device and upsetting equipment

Abstract

The utility model discloses a fixing device and upsetting equipment, the fixing device is applied to the upsetting equipment, the upsetting equipment has a first direction and a third direction, the first direction is perpendicular to the third direction, and the fixing device comprises a first fixing assembly and a limiting assembly. The first fixing assembly comprises a first fixing piece and a second fixing piece, and the first fixing piece and the second fixing piece are arranged in a spaced mode in the first direction; the limiting assembly is arranged on the side, in the third direction, of the first fixing assembly and comprises a limiting piece, the limiting piece extends in the first direction, and at least part of the limiting piece is located in the interval area between the first fixing piece and the second fixing piece. According to the fixing device, the PC steel bar can be prevented from deviating in the fixing process.

Description

Technical Field

[0001] This application relates to the technical field of upset forging of steel bars, and particularly to a fixing device and upset forging equipment. Background Art

[0002] In the industry of reinforced concrete products, upset forging equipment is used to apply extrusion pressure to both ends of PC steel bars to form upset heads. In traditional upset forging equipment, the PC steel bars are usually fixed by a fixing device, and then the PC steel bars are upset by an upset forging hammer. When fixing the PC steel bars, due to the length characteristics of the PC steel bars, the PC steel bars are likely to deviate from the fixed position, resulting in the inability to clamp and fix the PC steel bars. At this time, it is necessary to manually move the PC steel bars to the fixed position so that the fixing device can clamp the PC steel bars. However, this method seriously affects the work efficiency and has relatively large potential safety hazards. Summary of the Utility Model

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a fixing device that can prevent the PC steel bars from deviating during the fixing process.

[0004] This application also provides an upset forging equipment.

[0005] To achieve the above purpose, the technical solutions adopted in this application are as follows:

[0006] The fixing device according to the first aspect embodiment of this application is applied to upset forging equipment. The upset forging equipment has a first direction and a third direction, and the first direction is perpendicular to the third direction. The fixing device includes: a first fixing component, the first fixing component includes a first fixing member and a second fixing member, and the first fixing member and the second fixing member are arranged at intervals along the first direction; and a limiting component, the limiting component is arranged on one side of the first fixing component along the third direction, the limiting component includes a limiting member, the limiting member extends along the first direction and at least partially located in the interval area between the first fixing member and the second fixing member.

[0007] The fixing device of this application has the following advantages:

[0008] In this embodiment, a rod-shaped upset can be placed between the first fixing member and the second fixing member to clamp and fix the rod-shaped upset by the first fixing member and the second fixing member. Since the limiting assembly is arranged on one side of the first fixing assembly along the third direction, the limiting member of the limiting assembly extends along the first direction and is at least partially located in the interval area between the first fixing member and the second fixing member. Therefore, when the rod-shaped upset is placed between the first fixing member and the second fixing member, the limiting member can block the rod-shaped upset to limit the rod-shaped upset and prevent the rod-shaped upset from moving out of the interval area between the first fixing member and the second fixing member along the third direction, avoiding the deviation of the rod-shaped upset during the fixing process, so as to facilitate the fixing of the rod-shaped upset by the first fixing member and the second fixing member.

[0009] For the fixing device according to the first aspect embodiment of the present application, a positioning groove is provided on the first fixing member, and the positioning groove is provided with an opening facing the limiting member along the third direction. The limiting member has a positioning portion, and the positioning portion passes through the positioning groove through the opening and abuts against the groove wall of the positioning groove.

[0010] For the fixing device according to the first aspect embodiment of the present application, the limiting assembly further includes a first driving member, the first driving member is connected to the limiting member, and the first driving member is used to drive the limiting member to move along the third direction so that the positioning portion passes through the positioning groove.

[0011] For the fixing device according to the first aspect embodiment of the present application, the first fixing assembly further includes a second driving member, the second driving member is connected to the second fixing member, and is used to drive the second fixing member to move relative to the first fixing member along the first direction.

[0012] For the fixing device according to the first aspect embodiment of the present application, a relief groove is provided on the second fixing member, the relief groove extends along the first direction, the positioning portion extends along the first direction and at least partially protrudes from the positioning groove, and the second driving member is used to drive the second fixing member to move along the first direction and make the relief groove slide along the structure where the positioning portion protrudes from the positioning groove.

[0013] The fixing device according to the embodiment of the first aspect of the present application further has a second direction, and the third direction is perpendicular to the second direction and the first direction respectively. There are multiple positioning parts, and the multiple positioning parts are arranged at intervals along the second direction. There are multiple positioning grooves and multiple avoidance grooves. The multiple positioning grooves are arranged at intervals along the second direction, and the multiple avoidance grooves are arranged at intervals along the second direction. Each positioning groove is correspondingly arranged with an avoidance groove in the first direction, and each positioning part partially penetrates into a positioning groove and partially penetrates into an avoidance groove.

[0014] For the fixing device according to the embodiment of the first aspect of the present application, in the first direction, the length of the part of the positioning part protruding from the positioning groove is less than the length of the avoidance groove.

[0015] The fixing device according to the embodiment of the first aspect of the present application further has a second direction, and the third direction is perpendicular to the second direction and the first direction respectively. The fixing device further includes a second fixing assembly. The second fixing assembly and the first fixing assembly are arranged at intervals along the second direction. The second fixing assembly includes a third fixing member and a fourth fixing member. The third fixing member and the fourth fixing member are respectively located on both sides of the rod-shaped upsetting material along the first direction.

[0016] For the fixing device according to the embodiment of the first aspect of the present application, a first clamping hole is provided between the first fixing member and the second fixing member, and a second clamping hole is provided between the third fixing member and the fourth fixing member. Both the first clamping hole and the second clamping hole are used for clamping the rod-shaped upsetting material, and the first clamping hole and the second clamping hole are coaxially arranged.

[0017] The upsetting equipment according to the embodiment of the second aspect of the present application includes: the fixing device as described above.

[0018] The upsetting equipment of the present application has the following advantages:

[0019] In the upsetting equipment of the present application, since the fixing device of the present application can prevent the rod-shaped upsetting material from shifting during the fixing process, thus, the upsetting equipment of the present application can have a high working efficiency, and further the upsetting equipment of the present application can have a high production efficiency. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 Shows a schematic structural diagram of the upsetting device in the present application;

[0022] Figure 2 Shows a schematic structural diagram of the fixing device in the present application;

[0023] Figure 3 Shows a schematic structural diagram of the first fixing member and the second fixing member in the present application;

[0024] Figure 4 Shows a schematic structural diagram of the limiting member in the present application;

[0025] Figure 5 Shows a schematic structural diagram of the second fixing assembly in the present application.

[0026] Main element symbol description:

[0027] 10 - Fixing device;

[0028] 100 - First fixing assembly; 110 - First fixing member; 111 - Positioning groove; 120 - Second fixing member; 121 - Avoidance groove; 130 - Second driving member; 140 - First clamping hole;

[0029] 200 - Limiting assembly; 210 - Limiting member; 211 - Positioning portion; 220 - First driving member;

[0030] 300 - Second fixing assembly; 310 - Third fixing member; 320 - Fourth fixing member; 330 - Second clamping hole; 340 - Third driving member. Detailed implementation manners

[0031] The following will describe in detail the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0034] In the present application, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Refer to Figure 1 and Figure 2 As shown, the fixing device 10 involved in the embodiment of the present application is applied to a upsetting device. The upsetting device has a first direction and a third direction, and the first direction is perpendicular to the third direction. The fixing device 10 includes: a first fixing component 100 and a limiting component 200.

[0037] Specifically, the first fixing component 100 includes a first fixing member 110 and a second fixing member 120, and the first fixing member 110 and the second fixing member 120 are arranged at intervals along the first direction; the limiting component 200 is arranged on one side of the first fixing component 100 along the third direction, and the limiting component 200 includes a limiting member 210, which is extended along the first direction and is at least partially located in the interval area between the first fixing member 110 and the second fixing member 120.

[0038] It should be noted that the first direction is Figure 1 The direction pointed by x in the middle, the third direction is Figure 1 The direction indicated by z in the middle, and the third direction is the up and down direction of the upsetting equipment.

[0039] In this embodiment, the rod-shaped upsetting material can be placed between the first fixing member 110 and the second fixing member 120 so as to be clamped and fixed by the first fixing member 110 and the second fixing member 120. Since the limiting assembly 200 is arranged on one side of the first fixing assembly 100 along the third direction, the limiting member 210 of the limiting assembly 200 is extended along the first direction and is at least partially located in the interval area between the first fixing member 110 and the second fixing member 120. Therefore, when the rod-shaped upsetting material is placed between the first fixing member 110 and the second fixing member 120, the limiting member 210 can block the rod-shaped upsetting material to limit the rod-shaped upsetting material and prevent the rod-shaped upsetting material from escaping from the interval area between the first fixing member 110 and the second fixing member 120 along the third direction, thereby avoiding the rod-shaped upsetting material from being offset during the fixing process, so as to facilitate the first fixing member 110 and the second fixing member 120 to fix the rod-shaped upsetting material.

[0040] Reference Figure 3 as well as Figure 4 As shown, a positioning groove 111 is provided on the first fixing member 110 , and the positioning groove 111 has an opening arranged along the third direction toward the limiting member 210 . The limiting member 210 has a positioning portion 211 , which passes through the positioning groove 111 through the opening and abuts against the groove wall of the positioning groove 111 .

[0041] Specifically, the positioning groove 111 has a groove wall arranged opposite to the opening along the third direction, and the positioning portion 211 passes through the opening and is disposed in the positioning groove 111 and abuts against the groove wall.

[0042] In this embodiment, the positioning portion 211 can pass through the positioning slot 111 and abut against the slot wall of the positioning slot 111 , so that the positioning portion 211 is positioned by the positioning slot 111 , thereby achieving the positioning of the limiting member 210 .

[0043] Reference Figure 2As shown, the limiting component 200 further includes a first driving member 220. The first driving member 220 is connected to the limiting member 210, and the first driving member 220 is used to drive the limiting member 210 to move along the third direction, so that the positioning portion 211 penetrates through the positioning groove 111.

[0044] In this embodiment, the first driving member 220 can be used to drive the limiting member 210 to move along the third direction, so that the limiting member 210 approaches the first fixing component 100 along the third direction. At the same time, the positioning portion 211 can penetrate into the positioning groove 111 and abut against the groove wall of the positioning groove 111, so as to realize the positioning of the limiting member 210, thereby determining the end position of the movement of the limiting member 210 along the third direction. When the limiting member 210 is fixed in the positioning groove 111, the limiting member 210 can not only limit the rod-shaped upsetting material, but also avoid interference between the limiting member 210 and the clamping of the rod-shaped upsetting material by the fixing component.

[0045] Continue to refer to Figure 2 As shown, the first fixing component 100 further includes a second driving member 130. The second driving member 130 is connected to the second fixing member 120 and is used to drive the second fixing member 120 to move relative to the first fixing member 110 along the first direction.

[0046] Specifically, in this embodiment, the first fixing member 110 is fixedly connected to the machine base of the upsetting equipment. When the second fixing member 120 moves toward the first fixing member 110 along the first direction, the clamping of the rod-shaped upsetting material can be realized.

[0047] In this embodiment, the second driving member 130 can be used to drive the second fixing member 120 to move relative to the first fixing member 110 along the first direction, and make the second fixing member 120 move toward the direction close to the first fixing member 110, so as to clamp the rod-shaped upsetting material between the first fixing member 110 and the second fixing member 120, thereby realizing the clamping of the rod-shaped upsetting material.

[0048] Refer to Figure 3 As shown, the second fixing member 120 is provided with an avoidance groove 121 communicating with the positioning groove 111. The positioning portion 211 extends along the first direction, the avoidance groove 121 extends along the first direction, at least part of the positioning portion 211 protrudes from the positioning groove 111, and the second driving member 130 is used to drive the second fixing member 120 to move along the first direction and make the avoidance groove 121 slide along the structure where the positioning portion 211 protrudes from the positioning groove 111.

[0049] In this embodiment, when the second driving member 130 drives the second fixing member 120 to approach the first fixing member 110 in the first direction, the structure in which the positioning portion 211 protrudes from the positioning groove 111 can be inserted into the avoidance groove 121, so that the avoidance groove 121 slides along the positioning portion 211. In this way, the positioning portion 211 can guide the second fixing member 120 to ensure that the second fixing member 120 can move in the first direction. At the same time, the avoidance groove 121 can avoid the positioning portion 211. When the second driving member 130 drives the second fixing member 120 to move in the first direction, interference between the positioning portion 211 and the second fixing member 120 can be avoided.

[0050] Specifically, in this embodiment, the limiting member 210 further has a connecting portion. The connecting portion is connected to the first driving member 220. The positioning portion 211 is connected to the connecting portion and protrudes from the connecting portion in the third direction toward the first fixing assembly 100. And at least part of the positioning portion 211 is located in the interval area between the first fixing member 110 and the second fixing member 120. When the rod-shaped upsetting material is placed between the first fixing member 110 and the second fixing member 120, the positioning portion 211 abuts against the surface of the rod-shaped upsetting material to realize the limiting effect on the rod-shaped upsetting material.

[0051] Refer to Figure 3 and Figure 4 As shown, the fixing device 10 further has a second direction. The first direction is perpendicular to the second direction and the third direction respectively. There are multiple positioning portions 211. The multiple positioning portions 211 are arranged at intervals in the second direction. There are multiple positioning grooves 111 and multiple avoidance grooves 121. The multiple positioning grooves 111 are arranged at intervals in the second direction. The multiple avoidance grooves 121 are arranged at intervals in the second direction. Each positioning groove 111 is correspondingly arranged in the first direction with an avoidance groove 121. Each positioning portion 211 is partially inserted into a positioning groove 111 and partially inserted into an avoidance groove 121.

[0052] It should be noted that the second direction is Figure 1 the direction indicated by y in

[0053] In this embodiment, since each positioning portion 211 is partially inserted into a positioning groove 111, thus, the positioning accuracy of the positioning portion 211 can be improved through the cooperation between the plurality of positioning portions 211 and the plurality of positioning grooves 111, thereby improving the positioning accuracy of the limiting member 210, so as to ensure that the limiting member 210 can stop moving at a preset position during the movement along the third direction. Also, since each positioning portion 211 is partially inserted into an avoidance groove 121, thus, the guiding effect on the second fixing member 120 can be improved through the cooperation between the plurality of positioning portions 211 and the plurality of avoidance grooves 121, so as to ensure that the second fixing member 120 can move along the first direction, thereby improving the clamping stability of the first fixing assembly 100 on the rod-shaped upsetting material.

[0054] Referring to Figure 2 As shown, in the first direction, the length of the portion of the positioning portion 211 protruding from the positioning groove 111 is less than the length of the avoidance groove 121.

[0055] In this embodiment, in the first direction, since the length of the portion of the positioning portion 211 protruding from the positioning groove 111 is less than the length of the avoidance groove 121, thus, when the second fixing member 120 moves along the first direction, it can be avoided that the positioning portion 211 abuts against the groove wall of the avoidance groove 121 along the first direction, so as to avoid the groove wall of the avoidance groove 121 interfering with the movement of the second fixing member 120 relative to the positioning portion 211, so as to ensure that the second fixing member 120 can form a clamp on the rod-shaped upsetting material with the first fixing member 110 when moving along the first direction.

[0056] Referring to Figure 2 and Figure 5 As shown, the fixing device 10 further has a second direction, the first direction is perpendicular to the second direction and the third direction respectively. The fixing device 10 further includes a second fixing assembly 300. The second fixing assembly 300 and the first fixing assembly 100 are arranged at intervals along the second direction. The second fixing assembly 300 includes a third fixing member 310 and a fourth fixing member 320. The third fixing member 310 and the fourth fixing member 320 are respectively located on both sides of the rod-shaped upsetting material along the first direction.

[0057] Specifically, in this embodiment, the second fixing assembly 300 further has a third driving member 340. Both the third fixing member 310 and the fourth fixing member 320 are connected to the third driving member 340. The third driving member 340 is used to drive the third fixing member 310 and the fourth fixing member 320 to approach or separate from each other along the first direction, so as to realize the clamping and loosening of the rod-shaped upsetting material.

[0058] In this embodiment, since the second fixing component 300 is arranged at an interval from the first fixing component 100 in the second direction, and the third fixing member 310 and the fourth fixing member 320 of the second fixing component 300 are respectively located on both sides of the bar-shaped upsetting stock in the first direction, thus, the third fixing member 310 and the fourth fixing member 320 can clamp another bar segment of the bar-shaped upsetting stock spaced from the first fixing component 100 in the second direction, so as to improve the clamping stability of the bar-shaped upsetting stock. Before the first fixing member 110 and the second fixing member 120 clamp the bar-shaped upsetting stock, the third fixing member 310 and the fourth fixing member 320 are used to clamp the bar-shaped upsetting stock first, so as to initially fix the bar-shaped upsetting stock through the third fixing member 310 and the fourth fixing member 320. At the same time, when the third fixing member 310 and the fourth fixing member 320 clamp the bar-shaped upsetting stock, it is easy for the bar-shaped upsetting stock to shift out between the first fixing member 110 and the second fixing member 120 in the third direction. At this time, the limiting member 210 can play a certain limiting role on the bar-shaped upsetting stock to prevent the bar-shaped upsetting stock from shifting out between the first fixing member 110 and the second fixing member 120 in the third direction, so as to facilitate the subsequent clamping of the bar-shaped upsetting stock by the first fixing member 110 and the second fixing member 120.

[0059] Refer to Figure 3 and Figure 5 As shown, a first clamping hole 140 is provided between the first fixing member 110 and the second fixing member 120, and a second clamping hole 330 is provided between the third fixing member 310 and the fourth fixing member 320. Both the first clamping hole 140 and the second clamping hole 330 are used to clamp the bar-shaped upsetting stock, and the first clamping hole 140 and the second clamping hole 330 are coaxially arranged.

[0060] In this embodiment, since the first clamping hole 140 and the second clamping hole 330 are coaxially arranged, thus, it can be ensured that the bar segment of the bar-shaped upsetting stock clamped in the first clamping hole 140 and the bar segment clamped in the second clamping hole 330 are coaxially arranged, so as to ensure the straightness of the whole bar-shaped upsetting stock, which is convenient for subsequent upsetting of the bar-shaped upsetting stock.

[0061] Refer to Figure 1 As shown, the upsetting equipment involved in the present application includes: the above-mentioned fixing device 10.

[0062] In the upsetting equipment of the present application, since the fixing device 10 of the present application can prevent the bar-shaped upsetting stock from shifting during the fixing process, thus, the upsetting equipment of the present application can have a high working efficiency, and further the upsetting equipment of the present application can have a high production efficiency.

[0063] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0064] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A fixing device, characterized in that: Applied to an upsetting device, the upsetting device has a first direction and a third direction, the first direction is perpendicular to the third direction, and the fixing device includes: A first fixing assembly, the first fixing assembly comprising a first fixing member and a second fixing member, the first fixing member and the second fixing member being spaced apart from each other along the first direction; and A limiting component is arranged on one side of the first fixing component along the third direction, and the limiting component includes a limiting member, which is extended along the first direction and is at least partially located in the interval area between the first fixing member and the second fixing member.

2. The fixing device according to claim 1, characterized in that: The first fixing member is provided with a positioning groove, the positioning groove is provided with an opening arranged along the third direction toward the limiting member, the limiting member has a positioning portion, the positioning portion passes through the opening and is arranged in the positioning groove and abuts against the groove wall of the positioning groove.

3. The fixing device according to claim 2, characterized in that: The limiting component further includes a first driving member, which is connected to the limiting member and is used to drive the limiting member to move along the third direction so that the positioning portion passes through the positioning groove.

4. The fixing device according to claim 2, characterized in that: The first fixing assembly further includes a second driving member, which is connected to the second fixing member and is used to drive the second fixing member to move along the first direction relative to the first fixing member.

5. The fixing device according to claim 4, characterized in that: The second fixing member is provided with an avoidance groove, which extends along the first direction. The positioning portion extends along the first direction and at least partially protrudes from the positioning groove. The second driving member is used to drive the second fixing member to move along the first direction and make the avoidance groove slide along the structure of the positioning portion protruding from the positioning groove.

6. The fixing device according to claim 5, characterized in that: The fixing device also has a second direction, and the third direction is perpendicular to the second direction and the first direction respectively. There are multiple positioning parts, and the multiple positioning parts are arranged at intervals along the second direction. There are multiple positioning grooves and avoidance grooves, and the multiple positioning grooves are arranged at intervals along the second direction. The multiple avoidance grooves are arranged at intervals along the second direction. Each of the positioning grooves is arranged corresponding to an avoidance groove in the first direction, and each of the positioning parts is partially penetrated into one of the positioning grooves and partially penetrated into one of the avoidance grooves.

7. The fixing device according to claim 5, characterized in that: In the first direction, the length of the portion of the positioning portion protruding from the positioning groove is smaller than the length of the avoidance groove.

8. The fixing device according to claim 1, characterized in that: The fixing device also has a second direction, and the third direction is perpendicular to the second direction and the first direction respectively. The fixing device also includes a second fixing component, and the second fixing component and the first fixing component are arranged at intervals along the second direction. The second fixing component includes a third fixing piece and a fourth fixing piece, and the third fixing piece and the fourth fixing piece are respectively located on both sides of the rod-shaped upsetting material along the first direction.

9. The fixing device according to claim 8, characterized in that: A first clamping hole is provided between the first fixing member and the second fixing member, and a second clamping hole is provided between the third fixing member and the fourth fixing member. The first clamping hole and the second clamping hole are both used to clamp the rod-shaped upsetting material, and the first clamping hole and the second clamping hole are coaxially arranged.

10. An upsetting device, characterized in that: include: A fixing device as claimed in any one of claims 1 to 9.

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